Accessing array custom properties

[Craig Newman]

Hi.

An array variable is just a variable, it is not a property. You cannot “make” one into the other.

So, basically, put the pArrayName[pElementName]  of button “button” is just syntax that does not exist in the lexicon, for the above reason.

Craig

> On Oct 25, 2021, at 11:18 PM, Neville Smythe via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> Is there a logic behind the following?
> 
> I want the values of a custom property which is an array: to take a specific example the dropShow of button “button” and I want  the specific element color
> 
> Of course I can write: put the dropShadow of button “button” into aa; put  aa[color]
> 
> Conveniently there is a shortcut : put the dropShadow[color] of button “button” 
> 
> (which I guess would need special coding because there isn’t a property whose name is "dropShadow[color]”; and this doesn’t work for DataGrids - but that’s another question)
> 
> Now I want to use variables so I can script for different properties
> 
> put “color” into pElementName; put “dropShadow” into pArrayName
> 
> 1. This works:    put the dropShadow of button “button” into aa; put aa[pElementName]
> 
> 2. And this works:    put the pArrayname of button “button” into aa; put aa[pElementName]
> 
> 3. And (conveniently) this works:    put the dropShadow[pElementName] of button “button”
> 
> 4. BUT (annoyingly) this fails, giving an empty result:     put the pArrayName[pElementName]  of button “button”
> 
> Why? If 3 works, I would have thought the parser would substitute values for all variables before getting the property using  the “special coding”
> 
> Neville
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